Receiving end shell of photoelectric sensor

Abstract

The utility model belongs to the technical field of sensor manufacturing, and particularly relates to a photoelectric sensor receiving end shell which comprises a shell body, a light inlet is formed in the side wall A of the shell body, two dispensing holes are formed in the side wall B of the shell body, a gap is preset between the two dispensing holes, all light rays entering from the light inlet and parallel to the axis of the light inlet are set as light rays A, and light rays B are set as light rays B; the light A can irradiate on the side wall C of the shell body, the side wall C and the side wall A are both perpendicular to the side wall B, the included angle between the side wall C and the side wall A is smaller than 180 degrees, the projection of the side wall C on the side wall B is a straight line L, and the projection of a light spot, irradiated on the side wall C, of the light A on the straight line L is located between the projections of the two dispensing holes on the straight line L; the problem of how to prevent glue from being adhered to the CMOS sensor due to the fact that a worker improves the working speed is solved.

Description

Technical Field

[0001] The present application belongs to the field of sensor manufacturing technology, and specifically relates to a photoelectric sensor receiving end housing. Background Art

[0002] The receiving end of a photoelectric sensor consists of two main parts: a housing and a CMOS sensor. The CMOS sensor is placed inside the housing, allowing light entering the housing to contact the CMOS sensor, thereby converting the optical signal into an electrical signal. A cable hole is left in the housing, and then the power cable and signal cable are directly connected to the CMOS sensor inside the housing. This is used to transmit the electrical signal converted by the CMOS sensor to other devices outside the housing and to power the CMOS sensor.

[0003] The receiving end of the photoelectric sensor is usually set on the production line or conveyor belt of the factory, so it is subject to vibration during the operation of the production line or conveyor belt, which causes the connection between the CMOS sensor and the wires (including signal wires and power wires) to twist. The fatigue resistance here is the worst and it is easy to break. Figure 3 As shown, in general, electrical wires and external devices are connected using extension cables, which can cause the connection between the CMOS sensor and the wires to twist during the connection process. Therefore, the connection between the CMOS sensor and the wires (including signal and power cables) is fixed to a fixed plate, which is then fixed inside the housing. This prevents the CMOS sensor and wires from disconnecting during vibration. However, current housings require the fixing plate to be glued together with the CMOS sensor while the fixing plate is installed. Since ordinary workers use a piece-rate management model during assembly work, glue often sticks to the CMOS sensor due to workers trying to speed up their work, thereby affecting the CMOS sensor's photosensitivity. Utility Model Content

[0004] The purpose of this application is mainly to address the shortcomings of the existing technology. By setting two glue dispensing holes on the shell, a photoelectric sensor receiving end shell is designed, so that the fixing plate can be glued to the shell body by injecting glue from the glue dispensing holes into the shell body, thereby solving the problem of how to prevent workers from sticking glue to the CMOS sensor in order to increase work speed.

[0005] In order to achieve the above objectives, the technical solution adopted in this application is:

[0006] A photoelectric sensor receiving end shell includes a shell body, a light inlet is provided on the side wall A of the shell body, two glue dispensing holes are provided on the side wall B of the shell body, a gap is preset between the two glue dispensing holes, all light entering from the light inlet and parallel to the axis of the light inlet is set as light A, the light A can be irradiated on the side wall C of the shell body, the side wall C and side wall A are both perpendicular to the side wall B, the angle between side wall C and side wall A is less than 180°, the projection of the side wall C on the side wall B is a straight line L, and the projection of the light spot irradiated by the light A on the side wall C on the straight line L is located between the projections of the two glue dispensing holes on the straight line L.

[0007] Preferably, two positioning posts are provided on the side wall C, and the distance between the projections of the two positioning posts on the straight line L is greater than or equal to the distance between the two dispensing holes.

[0008] Preferably, the two positioning posts are both perpendicular to the side wall C.

[0009] Preferably, the side wall of the shell body opposite to the side wall B is a shell cover, and the shell cover is detachably connected to the shell body.

[0010] Preferably, a first wire outlet hole is provided on the side wall C, and the projection of the first wire outlet hole on the straight line L is located between the projections of the two dispensing holes on the straight line L.

[0011] Preferably, a second wire outlet hole is provided on the shell cover. When the shell cover is closed on the shell body, the second wire outlet hole is close to the side wall C, and the projection of the second wire outlet hole on the straight line L is located between the projections of the two dispensing holes on the straight line L.

[0012] Preferably, the side wall D on the shell body facing away from the side wall A is perpendicular to the side wall B, the projection of the side wall D on the plane where the side wall B is located surrounds the side wall B, a plane mirror holder is provided on the side wall D, the angle between the side wall D and the side wall C is less than 180°, and the light A can be reflected onto the side wall C after passing through the side wall D.

[0013] Preferably, the plane mirror holder includes two blocks, the projections of the two blocks on the side wall B are both U-shaped, the U-shaped openings of the two blocks face each other, the projection of the connecting line segment between the two blocks on the side wall B is a straight line M, the straight line M is parallel to the side wall D, the two ends of the projection of the straight line M on the side wall A pass through the projection of the light inlet on the side wall A, and the two ends of the projection of the straight line M on the straight line L are located at a distance between the two dispensing holes and at least partially intersect with the projection on the straight line L.

[0014] Preferably, a convex lens mounter is provided in the light inlet.

[0015] Preferably, the convex lens mounter includes a slot, and the two slots are respectively arranged on two opposite side walls in the light inlet, the projection of the slot on the side wall B is U-shaped, the U-shapes of the two slots are arranged facing each other, and the connecting line segment between the two slots is perpendicular to the axis of the light inlet.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] 1. This application designs a photoelectric sensor receiving end housing by setting two glue dispensing holes on the housing, so that the fixing plate can be glued to the housing body by injecting glue from the glue dispensing holes into the housing body, thereby solving the problem of how to prevent workers from sticking glue to the CMOS sensor in order to increase work speed.

[0018] 2. The side wall of the housing body opposite the side wall B in this application is a housing cover, which is removably connected to the housing body (in practice, it can be fastened with screws and bolts). This facilitates the installation of the fixing plate and CMOS sensor into the housing body. Furthermore, due to the provision of the housing cover, during assembly, the fixing plate can be initially secured within the housing body using positioning posts, and then the housing cover can be closed. This allows glue to be injected into the housing body through only two glue dispensing holes, completely eliminating the risk of workers dripping glue onto the CMOS sensor.

[0019] 3. This application coats the circumference of the positioning post with a layer of soft rubber. When coated with the soft rubber, the outer diameter of the positioning post is larger than the inner diameter of the positioning hole. When not coated with the soft rubber, the outer diameter of the positioning post is smaller than the inner diameter of the positioning hole. This allows for a more secure initial fixation of the fixing plate within the housing, preventing the fixing plate from falling off from the positioning post 8 under slight vibrations when glue is not applied.

[0020] 4. The provision of the second wire outlet hole in this application ensures that when workers install the fixing plate on the side wall, they can only close the shell cover to ensure that the wires (including signal lines and power lines) on the CMOS sensor are away from one end of the fixing plate and extend outside the shell body. Therefore, only by closing the shell cover on the shell body can the fixing plate be properly installed. After the fixing plate is installed, the glue injection step must be done outside the shell body into the glue dispensing hole. This further ensures that workers will not drip glue onto the CMOS sensor. It also prevents workers from not following the process flow and first injecting glue and then closing the shell cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the structure of this application;

[0022] Figure 2 When the second outlet hole is used in this application Figure 1 The structural diagram on the right;

[0023] Figure 3 When the first outlet hole is set in this application Figure 1 The structural diagram on the right;

[0024] Figure 4 This is an exploded view of the case where the first wire outlet hole is provided in this application;

[0025] Figure 5 This is a schematic diagram of the structure inside the shell body when the first wire outlet hole is set in this application;

[0026] Figure 6 To show the principle diagram of this application after being made into a photoelectric sensor;

[0027] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0028] Among them, 1. Shell body; 2. Side wall A; 3. Light inlet; 4. Glue dispensing hole; 5. Side wall C; 6. Side wall B; 7. Line L; 8. Positioning column; 9. Shell cover; 10. First wire outlet hole; 11. Second wire outlet hole; 12. Side wall D; 13. Block; 14. Line M; 15. Notch; 16. Plane mirror; 17. Convex lens; 18. CMOS sensor; 19. Fixing plate; 20. Positioning hole; 21. Light A; 22. Wire. DETAILED DESCRIPTION

[0029] like Figure 1-7 As shown, a photoelectric sensor receiving end shell includes a shell body 1, a light inlet 3 is provided on the side wall A2 of the shell body 1, two glue dispensing holes 4 are provided on the side wall B6 of the shell body 1, and a gap is preset between the two glue dispensing holes 4. All light entering from the light inlet 3 and parallel to the axis of the light inlet 3 is set as light A, and the light A21 can be irradiated on the side wall C5 of the shell body 1. The side wall C5 and the side wall A2 are both perpendicular to the side wall B6, and the angle between the side wall C5 and the side wall A2 is less than 180°. The projection of the side wall C5 on the side wall B6 is a straight line L7, and the projection of the light spot irradiated by the light A21 on the side wall C5 on the straight line L7 is located between the projections of the two glue dispensing holes 4 on the straight line L7.

[0030] In this embodiment, during use, the previous workstation first secures the CMOS sensor 18 to the center of the fixing plate 19, with the length of the fixing plate 19 being greater than the gap between the two glue holes 4. Alternatively, a component in which the CMOS sensor 18 is secured to the center of the fixing plate 19 and the length of the fixing plate 19 is greater than the gap between the two glue holes 4 is directly selected. The fixing plate 19 is then initially secured to the side wall C5 of the housing body 1, such that both ends of the projection of the fixing plate 19 on line L7 lie outside the projection of the gap between the two glue holes 4 on line L7. Glue is then injected from the side wall B6 toward the outside of the housing body 1 into the glue holes 5, completely adhering the fixing plate 19 to the side wall C5 within the housing body 1. Because the projection of the light spot of light A21 on side wall C5 onto line L7 lies between the projections of the two glue holes 4 on line L7, the glue injected from outside side wall B6 does not cover the CMOS sensor 15 that senses light A21, or at least does not cover the portion of the CMOS sensor 18 that senses light A21. After assembly, the photoelectric sensor's receiving end operates as follows: light A21 enters the housing 1 through light inlet 3 and strikes CMOS sensor 18. CMOS sensor 18 then converts the incident light A21 into an electrical signal and transmits it to a device outside the housing 1, thus fulfilling its sensor function. During the entire assembly process, fixing plate 19 can be affixed to the housing 1 by injecting glue from dispensing hole 4 outside the housing 1. This prevents workers from getting glue on CMOS sensor 18 in an effort to increase work speed.

[0031] As a preferred embodiment, two positioning posts 8 are provided on the side wall C5, and the distance between the projections of the two positioning posts 8 on the straight line L7 is greater than or equal to the distance between the two glue-dispensing holes 4. In this embodiment, a positioning hole 20 that cooperates with the positioning post 18 is first provided on the fixing plate 19 away from the CMOS sensor 18. During assembly, the positioning hole 20 on the fixing plate 19 can be fitted over the positioning post 18, thereby achieving preliminary positioning of the fixing plate 19 within the shell body 1. Glue is then injected into the glue-dispensing holes 4 from the side wall B6 toward the outside of the shell body 1, thereby completely securing the fixing plate 19 within the shell body 1. With this arrangement, the connection between the CMOS sensor 18 and the wires 22 (including signal wires and power wires) is secured by the fixing plate, making it less likely that the wires 22 will fall off the CMOS sensor 18.

[0032] As a preferred embodiment, the two positioning posts 8 are both perpendicular to the side wall C5 , so that the positioning holes 20 of the fixing plate 19 can be conveniently sleeved onto the positioning posts 8 .

[0033] As a preferred embodiment, the side wall of the shell body 1 opposite the side wall B6 is a shell cover 9, which is detachably connected to the shell body 1 (in actual application, it can be locked with screws). This arrangement facilitates the installation of the fixing plate 19 and CMOS sensor 18 into the shell body 1. Furthermore, due to the provision of the shell cover 9, during assembly, the fixing plate 19 can be initially fixed within the shell body 1 via the positioning posts 8, and then the shell cover 9 can be closed. This means that glue can be injected into the shell body 1 through only two glue dispensing holes 4. This completely prevents workers from dripping glue onto the CMOS sensor 18.

[0034] Preferably, the circumferential surface of the positioning post 8 is coated with a layer of soft rubber. When the positioning post 8 is coated with the soft rubber, the outer diameter of the positioning post 8 is larger than the inner diameter of the positioning hole 20. When the positioning post 8 is not coated with the soft rubber, the outer diameter of the positioning post 8 is smaller than the inner diameter of the positioning hole 20. This allows the fixing plate 19 to be initially fixed to the housing body 1 more firmly, thereby preventing the fixing plate 19 and the positioning post 8 from falling off when subjected to slight vibrations when glue is not injected.

[0035] Preferably, during assembly, the positioning column 8 and the positioning hole 20 are interference fit.

[0036] Preferably, a first wire outlet hole 10 is provided on the side wall C5. The projection of the first wire outlet hole 10 on the line L7 is located between the projections of the two dispensing holes 4 on the line L7. With this arrangement, the ends of the wires (including signal and power cables) on the CMOS sensor 18 away from the fixing plate 19 can extend out of the housing body 1 through the first wire outlet hole 10.

[0037] As a preferred embodiment, the shell cover 9 is provided with a second wire outlet hole 11. When the shell cover 9 is closed on the shell body 1, the second wire outlet hole 11 is close to the side wall C5, and the projection of the second wire outlet hole 11 on the line L7 is located between the projections of the two glue holes 4 on the line L7. With this arrangement, when a worker installs the fixing plate 19 on the side wall C, only by closing the shell cover 9 can the wires (including signal lines and power lines) on the CMOS sensor 18 be ensured to extend outside the shell body 1 away from one end of the fixing plate 19. As a result, the step of injecting glue into the glue holes 4 outside the shell body 1 can only be performed after the shell cover 9 is closed, further ensuring that workers will not drip glue onto the CMOS sensor 18.

[0038] As a preferred embodiment, the side wall D12 on the shell body 1 facing away from the side wall A2 is perpendicular to the side wall B6. The projection of the side wall D12 on the plane where the side wall B6 is located surrounds the side wall B6. A plane mirror fixture is provided on the side wall D12. The angle between the side wall D12 and the side wall C5 is less than 180°. The light A21 can be reflected onto the side wall C5 after passing through the side wall D12. With this arrangement, a plane mirror 16 can be fixed by the plane mirror fixture, so that the light A entering the light inlet 3 is reflected onto the CMOS sensor 18 after passing through the plane mirror 16. This design can set the CMOS sensor 18 in a direction that deviates from the direction of the light A entering the light inlet 3, thereby avoiding the risk of the material hitting the CMOS sensor 18 when it hits the shell body 1 during use.

[0039] As a preferred embodiment, the plane mirror holder includes two clamping blocks 13. The projections of the two clamping blocks 13 on the side wall B6 are both U-shaped. The U-shaped openings of the two clamping blocks 13 face each other. The connecting line segment between the two clamping blocks 13 projects a straight line M14 on the side wall B6. The straight line M14 is parallel to the side wall D12. The two ends of the projection of the straight line M14 on the side wall A2 pass through the projection of the light inlet 3 on the side wall A2. With this arrangement, the two clamping blocks 13 can clamp the plane mirror 16. Because the two ends of the projection of the straight line M14 on the side wall A2 pass through the projection of the light inlet 3 on the side wall A2, it can ensure that the light A21 can be illuminated by the plane mirror 16 after entering the light inlet 3.

[0040] As a preferred embodiment, a convex lens mount is provided in the light inlet 3. With this arrangement, a convex lens 17 can be provided at the light inlet 13 to focus the light A21 entering the light inlet 3 and illuminate the CMOS sensor 18, thereby reducing the volume of the housing 1 and reducing the space occupied by the housing 1.

[0041] As a preferred embodiment, the convex lens mount includes a notch 15, two of which are provided on two opposing side walls within the light inlet 3. The projection of the notch 15 on the side wall B6 is U-shaped, and the U-shaped portions of the two notches 15 are disposed facing each other, with the connecting line between the two notches 15 being perpendicular to the axis of the light inlet 3. With this arrangement, the convex lens 17 is clamped by the notch 15 to achieve fixation.

Claims

1. A photoelectric sensor receiving end housing, characterized in that: The invention comprises a shell body (1), a light inlet (3) is provided on a side wall A (2) of the shell body (1), two glue dispensing holes (4) are provided on a side wall B (6) of the shell body (1), a gap is preset between the two glue dispensing holes (4), all light rays entering from the light inlet (3) and parallel to the axis of the light inlet (3) are set as light rays A, the light rays A (21) can be irradiated onto the side wall C (5) of the shell body (1), the side wall C (5) and the side wall A (2) are both perpendicular to the side wall B (6), the angle between the side wall C (5) and the side wall A (2) is less than 180°, the projection of the side wall C (5) on the side wall B (6) is a straight line L (7), and the projection of the light spot irradiated by the light rays A (21) onto the side wall C (5) on the straight line L (7) is located between the projections of the two glue dispensing holes (4) on the straight line L (7).

2. The photoelectric sensor receiving end housing according to claim 1, characterized in that: Two positioning columns (8) are provided on the side wall C (5), and the distance between the projections of the two positioning columns (8) on the straight line L (7) is greater than or equal to the distance between the two dispensing holes (4).

3. The photoelectric sensor receiving end housing according to claim 2, characterized in that: The two positioning columns (8) are both perpendicular to the side wall C (5).

4. The photoelectric sensor receiving end housing according to claim 1, characterized in that: The side wall of the shell body (1) opposite to the side wall B (6) is a shell cover (9), and the shell cover (9) is detachably connected to the shell body (1).

5. The photoelectric sensor receiving end housing according to claim 4, characterized in that: A first wire outlet hole (10) is provided on the side wall C (5), and a projection of the first wire outlet hole (10) on the straight line L (7) is located between projections of the two glue dispensing holes (4) on the straight line L (7).

6. The photoelectric sensor receiving end housing according to claim 4, characterized in that: The shell cover (9) is provided with a second wire outlet hole (11). When the shell cover (9) is covered on the shell body (1), the second wire outlet hole (11) is close to the side wall C (5), and the projection of the second wire outlet hole (11) on the straight line L (7) is located between the projections of the two glue dispensing holes (4) on the straight line L (7).

7. The photoelectric sensor receiving end housing according to claim 1, characterized in that: The side wall D (12) on the shell body (1) facing away from the side wall A (2) is perpendicular to the side wall B (6), and the projection of the side wall D (12) on the plane where the side wall B (6) is located surrounds the side wall B (6). A plane mirror fixture is provided on the side wall D (12), and the angle between the side wall D (12) and the side wall C (5) is less than 180 degrees. The light A (21) can be reflected onto the side wall C (5) after passing through the side wall D (12).

8. The photoelectric sensor receiving end housing according to claim 7, characterized in that: The plane mirror holder comprises two clamping blocks (13), the projections of the two clamping blocks (13) on the side wall B (6) are both U-shaped, the U-shaped openings of the two clamping blocks (13) face each other, the projection of the connecting line segment between the two clamping blocks (13) on the side wall B (6) is a straight line M (14), the straight line M (14) is parallel to the side wall D (12), and the two ends of the projection of the straight line M (14) on the side wall A (2) pass through the projection of the light inlet (3) on the side wall A (2).

9. The photoelectric sensor receiving end housing according to claim 7, characterized in that: A convex lens mounter is provided in the light inlet (3).

10. The photoelectric sensor receiving end housing according to claim 9, characterized in that: The convex lens mounter includes a notch (15), two notches (15) are respectively arranged on two opposite side walls inside the light inlet (3), the projection of the notch (15) on the side wall B (6) is U-shaped, the U-shapes of the two notches (15) are arranged facing each other, and the connecting line segment between the two notches (15) is perpendicular to the axis of the light inlet (3).

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